CAREER: Particle Finite Element Response Sensitivity Analysis of Fluid-Structure Interaction

该奖项由2009年美国复苏与再投资法案(公法111-5)资助，该学院早期职业发展(CAREAR)项目的研究目标是开发用于流体-结构相互作用的数值模拟的分析灵敏度方法。灵敏度分析方法可用于海岸结构物的设计和评估。在基于性能工程的可靠性和优化应用中也需要它。该研究方法基于直接对支配粒子有限元方法的方程进行微分，然后在俄勒冈州立大学辛斯代尔波浪研究实验室的海啸波浪池进行数值验证和实验验证。成果包括流体-结构相互作用对不确定流体和结构参数的敏感性的建模、分析和可视化工具；流体-结构相互作用敏感性的高性能计算方法；发布研究结果以供其他研究人员和从业人员广泛传播；以及为其他人应用该方法提供文档。如果这项研究成功，这项研究的结果将进一步深入了解海岸结构物如何响应海啸抬高和飓风风暴潮产生的荷载，可能导致改进设计规范。开放源码软件框架OpenSees中的建模和分析工具的开发，将使参与流固相互作用研究的其他研究人员容易获得该项目的结果。研究生将从这个项目中受益，通过课堂教学提高流固相互作用的敏感性，并积极参与研究。该项目将使工科本科生在学术生涯早期接触计算和可视化，并将开发一门跨学科的高级顶尖课程，以使土木工程专业的学生在专业实践中认识软件工程。该项目的外展和大使部分旨在吸引对计算机感兴趣的高中生攻读土木工程学位。

This award is funded under the American recovery and Reinvestment Act of 2009 (Public Law 111-5)The research objective of this Faculty Early Career Development (CAREER) project is to develop analytic sensitivity methods for numerical simulations of fluid-structure interaction. The sensitivity methods can be employed in the design and assessment of coastal structures. It is also need in reliability and optimization applications for performance-based engineering. The research approach is based on direct differentiation of the equations that govern the particle finite element method, followed by numerical verification and experimental validation at the tsunami wave basin in the O.H. Hinsdale Wave Research Laboratory at Oregon State University. Deliverables include modeling, analysis, and visualization tools for the sensitivity of fluid-structure interaction to uncertain fluid and structural parameters; high performance computing methods for fluid-structure interaction sensitivity; publication of research results for wider dissemination to other researchers and practitioners; and documentation of the approach for application by others.The results of this research, if successful, will provide further insight in to how coastal structures respond to loads generated by tsunami runup and hurricane storm surge, potentially leading to improved design codes. The development of modeling and analysis tools in the open source software framework, OpenSees, will make the results of this project readily available to other researchers involved in fluid-structure interaction studies. Graduate students will benefit from this project by way of classroom instruction in fluid-structure interaction sensitivity and active participation in the research. The project will expose undergraduate engineering students to computing and visualization early in their academic career and an interdisciplinary senior capstone course will be developed in order to make civil engineering students cognizant of software engineering in professional practice. The outreach and ambassador components of the project aim to attract high school students interested in computing to pursue a degree in civil engineering.